Fa - Fz
| Facchinia cerastifolia | Miere Hornkrautblättrige | Chickweed- leaved Sandwort | Caryophyllaceae |
| Facchinia cherlerioides ssp. aretioides | Miere Mannsschild Nördliche | Aretia- like Sandwort | Caryophyllaceae |
| Facchinia cherlerioides ssp cherleioides | Miere Mannsschild Südliche | Cherleria- like Sandwort | Caryophyllaceae |
| Facchinia grignensis | Miere Grigna | Grigna Sandwort | Caryophyllaceae |
| Facchinia herniarioides | Miere Bruchkrautähnliche | Herniaria- like Sandwort | Caryophyllaceae |
| Facchinia lanceolata | Miere Lanzettblättrige | Lanceolate Sandwort | Caryophyllaceae |
| Facchinia rupestris | Miere Felsen | Rock Sandwort | Caryophyllaceae |
| Facchinia valentina | Miere Valecianische | Valencian Sandwort | Caryophyllaceae |
| Fagonia cretica | Fagonie Kretische | Cretan Prickly Clover | Zygophyllaceae |
| Fagopyrum dibotrys | Buchweizen Ausdauernder | Perennial Buckwheat | Polygonaceae |
| Fagopyrum esculentum | Buchweizen Echter | Common Buckwheat | Polygonaceae |
| Fagopyrum tartaricum | Buchweizen Tartarischer | Tartarian Buckwheat | Polygonaceae |
| Fagus sylvatica | Buche Rot | Europaean Beech | Fagaceae |
| Fagus orientalis | Buche Orientalische | Oriental Beech | Fagaceae |
| Falcaria vulgaris | Sichelmöhre Gewöhnliche | Common Sickleweed | Apiaceae |
| Fallopia baldschuanica | Schling- Flügelknöterich | Russian Vine | Polygonaceae |
| Fallopia convolvulus | Acker- Flügelknöterich | Black Bindweed | Polygonaceae |
| Fallopia dumetorum | Hecken- Flügelknöterich | Climbing False Buckwheat | Polygonaceae |
| Fallopia japonica | Staudenknöterich Japanischer | Japanese Knotweed | Polygonaceae |
| Fallopia sachalinensis | Staudenknöterich Sachalin | Giant Knotweed | Polygonaceae |
| Fallopia x bohemica | Staudenknöterich Bastard | Bohemian Knotweed | Polygonaceae |
| Fedia cornucopiae | Fedie Füllhorn | Horn of Plenty | Valerianaceae |
| Fedia graciliflora | Fedie Zartblütige | Slender Fedia | Valerianaceae |
| Femeniasia balearica | Femeniasie Balearische | Menorcan Knapweed | Asteraceae |
| Ferraria crispa | Seestern- Iris Krause | Starfish- Iris | Iridaceae |
| Ferula arrigonii | Rutenkraut Arrigonis | Arrigoni's Fennel | Apiaceae |
| Ferula communis | Rutenkraut Gewöhnliches | Giant Fennel | Apiaceae |
| Ferula glauca | Rutenkraut Blaugrünes | Bluish Fennel | Apiaceae |
| Ferula heuffelii | Rutenkraut Heuffels | Heuffel's Fennel | Apiaceae |
| Ferula loscosii | Rutenkraut Loscos | Loscos Fennel | Apiaceae |
| Ferula tingitana | Rutenkraut Tanger | Tangier Fennel | Apiaceae |
| Ferulago brachyloba | Birkwurz Kurzlappige | Short- lobed Ferulago | Apiaceae |
| Ferulago campestris | Birkwurz Feld | Field Ferulago | Apiaceae |
| Ferulago capillaris | Birkwurz Haarfeine | Capillary Ferulago | Apiaceae |
| Ferulago granatensis | Birkwurz Granada | Granada Ferulago | Apiaceae |
| Ferulago humilis | Birkwurz Niedrige | Dwarf Ferulago | Apiaceae |
| Ferulago macedonica | Birkwurz Mazedonische | Macedonian Ferulago | Apiaceae |
| Ferulago nodosa | Birkwurz Knotige | Eastern Ferulago | Apiaceae |
| Ferulago sartorii | Birkwurz Sartoris | Sartoris Ferulago | Apiaceae |
| Ferulago serpentinica | Birkwurz Serpentin | Serpentine Ferulago | Apiaceae |
| Ferulago sylvatica | Birkwurz Wald | Wood Ferulago | Apiaceae |
| Ferulago ternatifolia | Birkwurz Dreiblättrige | Ternate Ferulago | Apiaceae |
| Ferulago thyrsiflora | Birkwurz Thyrsenblütige | Thyrse- flowered Ferulago | Apiaceae |
| Ferulago trachycarpa | Birkwurz Raufrüchtige | Roughfruit Ferulago | Apiaceae |
| Ficaria ambigua | Scharbockskraut Fruchtbares | Doubtful Celandine | Ranunculaceae |
| Ficaria calthifolia | Scharbockskraut Nacktstängeliges | Buttercup Celandine | Ranunculaceae |
| Ficaria chrysocephala | Scharbockskraut Goldköpfiges | Golden- headed Celandine | Ranunculaceae |
| Ficaria ficariiformis | Scharbockskraut Großblütiges | Large- flowered Celandine | Ranunculaceae |
| Ficaria ficarioides | Scharbockskraut Feigenähnliches | Ficus- like Celandine | Ranunculaceae |
| Ficaria verna | Scharbockskraut Frühlings | Lesser Celandine | Ranunculaceae |
| Ficus carica | Feige Echte | Edible Fig | Moraceae |
| Ficus elastica | Gummibaum | Indian Rubber Fig | Moraceae |
| Filipendula ulmaria | Mädesüß Großes | Meadow Sweet | Rosaceae |
| Filipendula vulgaris | Mädesüß Kleines | Fern- leaf Dropwort | Rosaceae |
| Flueggea tinctoria | Wegdorn Färber | Dyer's Buckthorn | Phyllanthaceae |
| Foeniculum sanguineum | Fenchel Blutroter | Blood Fennel | Apiaceae |
| Foeniculum piperitum | Fenchel Pfeffer | Pepper Fennel | Apiaceae |
| Foeniculum vulgare | Fenchel Gewöhnlicher | Common Fennel | Apiaceae |
| Fontanesia phillyreoides | Fontansie Syrische | Syrian Privet | Oleaceae |
| Forsskalea tenacissima | Forsskalea Zähe | Desert Forsskalea | Urticaceae |
| Forsythia europaea | Forsythie Europäische | European Forsythia | Oleaceae |
| Forsythia suspensa | Forsythie Hänge | Weeping Forsythia | Oleaceae |
| Forsythia viridissima | Forsythie Grüne | Greenstem Forsythia | Oleaceae |
| Forsythia x intermedia | Forsythie Garten | Goldilocks | Oleaceae |
| Fortunella hindsii | Forsythie Hongkong | Hong Kong Kumquat | Rutaceae |
| Fortunella japonica | Forsythie Runde | Round Kumquat | Rutaceae |
| Fortunella margarita | Forsythie Ovale | Oval Kumquat | Rutaceae |
| Fortunella obovata | Forsythie Changshou | Fukushu Kumquat | Rutaceae |
| Fragaria moschata | Erdbeere Zimt | Musk Strawberry | Rosaceae |
| Fragaria vesca | Erdbeere Wald | Woodland Strawberry | Rosaceae |
| Fragaria virginiana | Erdbeere Virginische | Virginian Strawberry | Rosaceae |
| Fragaria viridis | Erdbeere Knack | Green Strawberry | Rosaceae |
| Fragaria x ananassa | Erdbeere Garten | Cultivated Strawberry | Rosaceae |
| Fragaria x hagenbachiana | Erdbeere Bastard | Bastard Strawberry | Rosaceae |
| Fragaria x neglecta | Erdbeere Übersehene | Overlooked Strawberry | Rosaceae |
| Frangula alnus | Faulbaum Echter | Glossy Buckthorn | Rhamnaceae |
| Frangula pedunculata | Faulbaum Gestielter | Pedunculate Buckthorn | Rhamnaceae |
| Frangula rupestris | Faulbaum Felsen | Rock Buckthorn | Rhamnaceae |
| Frankenia boissieri | Seeheide Boissiers | Boissier's Sea Heath | Frankeniaceae |
| Frankenia composita | Seeheide Zusammengesetzte | Composite Sea Heath | Frankeniaceae |
| Frankenia corymbosa | Seeheide Doldige | Corymbose Sea Heath | Frankeniaceae |
| Frankenia hirsuta | Seeheide Behaarte | Hairy Sea Heath | Frankeniaceae |
| Frankenia laevis | Seeheide Glatte | Smooth Sea Heath | Frankeniaceae |
| Frankenia pulverulenta | Seeheide Einjährige | Annuell Sea Heath | Frankeniaceae |
| Frankenia thymifolia | Seeheide Thymianblättrige | Thyme-leaved Sea Heath | Frankeniaceae |
| Fraxinus americana | Esche Weiß- | White Ash | Oleaceae |
| Fraxinus angustifolia | Esche Schmalblättrige | Small leafed Ash | Oleaceae |
| Fraxinus excelsior | Esche Gewöhnliche | European Ash | Oleaceae |
| Fraxinus ornus | Esche Manna | Manna Ash | Oleaceae |
| Fraxinus pallisiae | Esche Behaarte | Pallis' Ash | Oleaceae |
| Fraxinus pennsylvanica | Esche Rot- | Green Ash | Oleaceae |
| Fremontodendron 'California Glory' | Flanellstrauch Bastard | 'California Glory' Flannelbush | Malvaceae |
| Fremontodendron californicum | Flanellstrauch Kalifornischer | California Flannelbush | Malvaceae |
| Fremontodendron mexicanum | Flanellstrauch Mexikanischer | Mexican Flannelbush | Malvaceae |
| Freesia alba | Freesie Weiße | White Freesia | Iridaceae |
| Freesia refracta | Freesie Umgebogene | Deflexed Freesia | Iridaceae |
| Fritillaria bithynica | Schachblume Bithynische | Bithynian Fritillary | Liliaceae |
| Fritillaria burnatii | Schachblume Burnats | Burnat's Fritillary | Liliaceae |
| Fritillaria caballeroi | Schachblume Caballeros | Caballero's Fritillary | Liliaceae |
| Fritillaria carica | Schachblume Karische | Carien Fritillary | Liliaceae |
| Fritillaria conica | Schachblume Kegel | Conical Fritillary | Liliaceae |
| Fritillaria davisii | Schachblume Davis' | Davis's Fritillary | Liliaceae |
| Fritillaria drenovskii | Schachblume Drenovskis | Drenovski's Fritillary | Liliaceae |
| Fritillaria ehrhartii | Schachblume Ehrharts | Erhart's Fritillary | Liliaceae |
| Fritillaria elwesii | Schachblume Grünstreifige | Elwes's Fritillary | Liliaceae |
| Fritillaria epirotica | Schachblume Epirus | Epirus Fritillary | Liliaceae |
| Fritillaria euboeica | Schachblume Euböa | Evvian Fritillary | Liliaceae |
| Fritillaria graeca | Schachblume Griechische | Greek Fritillary | Liliaceae |
| Fritillaria gussichiae | Schachblume Gussichs | Gussich's Fritillary | Liliaceae |
| Fritillaria imperialis | Kaiserkrone | Imperial Fritillary | Liliaceae |
| Fritillaria involucrata | Schachblume Gegenblättrige | Three- bracted Fritillary | Liliaceae |
| Fritillaria ionica | Schachblume Ionische | Ionian Fritillary | Liliaceae |
| Fritillaria legionensis | Schachblume Leonesische | Leon Fritillary | Liliaceae |
| Fritillaria lusitanica | Schachblume Portugiesische | Iberian Fritillary | Liliaceae |
| Fritillaria macedonica | Schachblume Mazedonische | Macedonian Fritillary | Liliaceae |
| Fritillaria meleagris | Schachblume Gewöhnliche | Snakes- head Fritillary | Liliaceae |
| Fritillaria messanensis | Schachblume Messina | Messina Fritillary | Liliaceae |
| Fritillaria messanensis ssp. gracilis | Schachblume Zierliche | Slender Fritillary | Liliaceae |
| Fritillaria montana | Schachblume Berg | Mountain Fritillary | Liliaceae |
| Fritillaria mutabilis | Schachblume Veränderliche | Variable Fritillary | Liliaceae |
| Fritillaria obliqua | Schachblume Schiefe | Oblique Fritillary | Liliaceae |
| Fritillaria persica | Schachblume Persische | Persian Fritillary | Liliaceae |
| Fritillaria phitosia | Schachblume Phitos' | Phitos's Fritillary | Liliaceae |
| Fritillaria pontica | Schachblume Pontische | Pontic Fritillary | Liliaceae |
| Fritillaria pyrenaica | Schachblume Pyrenäen | Pyrenean Fritillary | Liliaceae |
| Fritillaria rhodia | Schachblume Rhodische | Rhodian Fritillary | Liliaceae |
| Fritillaria rhodocanakis | Schachblume Rodokanakis' | Rodokanakis's Fritillary | Liliaceae |
| Fritillaria sibthorpiana | Schachblume Sibthorps | Sibthorp's Fritillary | Liliaceae |
| Fritillaria stenophylla | Schachblume Schmalblättrige | Narrow- leaved Fritillary | Liliaceae |
| Fritillaria tubaeiformis ssp. moggridgei | Schachblume Moggridges | Moggridge's Fritillary | Liliaceae |
| Fritillaria tubaeiformis ssp. tubaeiformis | Schachblume Röhrige | Dauphiné Fritillary | Liliaceae |
| Fuchsia magellanica | Fuchsie Scharlach | Magellan's Fuchsia | Cistaceae |
| Fumana aciphylla | Nadelröschen Spitzblättriges | Acumintae- leaved Rockrose | Cistaceae |
| Fumana arabica | Nadelröschen Arabisches | Arabian Rockrose | Cistaceae |
| Fumana baetica | Nadelröschen Baetisches | Baetian Rockrose | Cistaceae |
| Fumana bonapartei | Nadelröschen Bonapartes | Bonaparte's Rockrose | Cistaceae |
| Fumana ericifolia | Nadelröschen Heideblättriges | Heath- leaved Rockrose | Cistaceae |
| Fumana ericoides | Nadelröschen Aufrechtes | Upright Rockrose | Cistaceae |
| Fumana fontanesii | Nadelröschen Desfontaines | Desfontaine's Rockrose | Cistaceae |
| Fumana hispidula | Nadelröschen Borstiges | Hispid Rockrose | Cistaceae |
| Fumana juniperina | Nadelröschen Wacholder | Juniper- like Rockrose | Cistaceae |
| Fumana lacidulemiensis | Nadelröschen Lacibula | Lacibula Rockrose | Cistaceae |
| Fumana laevipes | Nadelröschen Glattstieliges | Smooth- stemmed Rockrose | Cistaceae |
| Fumana laevis | Nadelröschen Glattes | Smooth Rockrose | Cistaceae |
| Fumana paphlagonica | Nadelröschen Paphlagonien | Paphlagonian Rockrose | Cistaceae |
| Fumana paradoxa | Nadelröschen Seltsames | Weird Rockrose | Cistaceae |
| Fumana procumbens | Nadelröschen Niederliegendes | Procumbent Rockrose | Cistaceae |
| Fumana scoparia | Nadelröschen Besen | Broom Rockrose | Cistaceae |
| Fumana thymifolia | Nadelröschen Thyminablättriges | Thyme- leaved Rockrose | Cistaceae |
| Fumaria agraria | Erdrauch Feld | Field Fumitory | Papaveraceae |
| Fumaria capreolata | Erdrauch Rankender | White Ramping Fumitory | Papaveraceae |
| Fumaria densiflora | Erdrauch Dichtblütiger | Dense- flowered Fumitory | Papaveraceae |
| Fumaria muralis | Erdrauch Mauer | Wall Fumitory | Papaveraceae |
| Fumaria officinalis | Erdrauch Gewöhnlicher | Common Fumitory | Papaveraceae |
| Fumaria parviflora | Erdrauch Kleinblütiger | Fineleaf Fumitory | Papaveraceae |
| Fumaria rostellata | Erdrauch Schnabel | Beaked Fumitory | Papaveraceae |
| Fumaria schleicheri | Erdrauch Schleichers | Schleicher's Fumitory | Papaveraceae |
| Fumaria schrammii | Erdrauch Schramms | Schramm's Fumitory | Papaveraceae |
| Fumaria vaillantii | Erdrauch Vaillants | Few- flowered Fumitory | Papaveraceae |
| Fumaria wirtgenii | Erdrauch Wirtgens | Wirtgen's Fumitory | Papaveraceae |
| Furcraea foetida | Furcraea Stinkende | Stinking Furcrae | Asparagaceae |
| Furcraea selloana | Furcraea Sellos | Sello's Furcrae | Asparagaceae |